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Rock formation

Limestone rock containing lots of calcium carbonate from shells.

Sediments containing lots of calcium carbonate from shells can be turned into rock over millions of years. This limestone rock can be pushed up to form land by tectonic Earth movements. Some carbon trapped in the sediments forms gas and oil.

Acknowledgement: Verity Coomer

Glossary

Rights: Verity Coomer
Published: 30 June 2010Size: 60.82 KB
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